蓄电池在一些（）的条件下，采用均衡充电方式。
参考答案：特定
They were all pleased with _____ them. [ ]
A. what you said
B. what did you say
C. what you had told
D. what you had spoke
计算负荷：应结合农村电力发展规划确定，一般可按（）考虑。
A.5年
B.15年
C.10年
D.20年
